java每日一练--day2

拼接字符串

public class Demo {

public static void main(String[] args) {
String str1=5+"5";       
String str2=5+5+"5"+5+5; 
String str3='5'+5+"zzt";
String str4="zzt"+'5'+5;
System.out.println(str1);
System.out.println(str2);
System.out.println(str3);
System.out.println(str4);

}

}